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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />J <br /> <br />OG1"194 <br /> <br />WATER RESOURCE OF THE SAN JUAN RIVER BASIN IN COLORADO <br /> <br />INTRODUCTION <br /> <br />General <br /> <br /> <br />This report presents an analysis of the water resource of the San Juan <br /> <br /> <br />River Basin in Colorado. The status of present water use development and the <br /> <br /> <br />potential water requirements of the Basin are discussed. <br /> <br /> <br />The data presented in this report were developed from independent <br /> <br /> <br />reconnaissance field study and from analysis of water development work and <br /> <br /> <br />reports of others. <br /> <br /> <br />Time available for study and the preparation of this report did not <br /> <br /> <br />permit extensive field work nor did it provide for a detailed checking of <br /> <br /> <br />the work and opinions of others. The data presented should be considered <br /> <br /> <br />as preliminary, subject to refinement and adjustment as additional conclusive <br /> <br /> <br />information becomes available. <br /> <br /> <br />For purposes of analysis and reporting, the data on watershed area, <br /> <br /> <br />the origin of runoff, and the runoff contributed to the Colorado River by <br /> <br /> <br />the San Juan River are discussed under the heading INTRODUCTION. Present <br /> <br /> <br />stream depletion and potential water requirement are discussed as eight <br /> <br />divisions, each representing a separate tributary sub-basin of the San Juan <br /> <br />Basin. <br /> <br />Drainage Basin <br />The San Juan River is a major tributary of the Colorado River. It <br />joins the Colorado in Utah eighty miies upstream from Lee Ferry and drains <br />portions of the states of Colorado, New Mexico, Arizona and Utah. <br /> <br />-l- <br />